There are disclosed various compounds of the formula below,
where
Xis hydrogen, halogen or loweralkyl;
Yis hydrogen, halogen, loweralkyl, loweralkoxy or trifluoromethyl;
R₁is hydrogen, loweralkyl, aryl, arylloweralkyl, diloweralkylaminoloweralkyl or
R₃ being hydrogen, loweralkyl or arylloweralkyl; and
R₂is hydrogen, loweralkyl or arylloweralkyl;
which compounds are useful as analgesic agents, and a process for their preparation.
已公开的各种化合物如下式所示、
式中
X为氢、卤素或低级烷基;
Y是氢、卤素、低级烷基、低级烷氧基或三
氟甲基;
R₁ 是氢、低级烷基、芳基、芳基低级烷基、稀低级烷基
氨基低级烷基或
R₃ 是氢、低级烷基或芳基低级烷基;以及
R₂ 是氢、低级烷基或芳基低级烷基;
可用作镇痛剂的化合物及其制备方法。